LT1028_15 Datasheet, PDF (8/28 Pages) Linear Technology – Ultralow Noise Precision High Speed Op Amps

LT1028/LT1128
Typical Performance Characteristics
Voltage Gain vs Frequency
LT1028
Gain, Phase vs Frequency
160
70
V_S = ±15V
PHASE
140
T_A = 25°C
60
R_L = 2k
120
50
100
LT1128
LT1028
40
80
30
60
20
40
GAIN
20
0
–20
0.01 0.1 1
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
10
V_S = ±15V
0 T_A = 25°C
C_L = 10pF
–10
10k
100k
1M
10M
FREQUENCY (Hz)
1028 G19
70
60
50
40
30
20
10
0
–10
100M
1028 G20
Gain Error vs Frequency
Closed-Loop Gain = 1000
1
TYPICAL
PRECISION
OP AMP
LT1128
0.1
LT1028
0.01
0.001
0.1
GAIN
ERROR
=
CLOSED-LOOP GAIN
OPEN-LOOP GAIN
1
10
100
FREQUENCY (Hz)
1028 G22
LT1128
Gain Phase vs Frequency
70
70
60
60
PHASE
50
50
40
40
30
30
20
GAIN
10
0
V_S = ±15V
T_A = 25°C
–10 ^{CL = 10pF}
10k
100k
1M
10M
FREQUENCY (Hz)
20
10
0
–10
100M
1028 G23
Voltage Gain vs Supply Voltage
100
T_A = 25°C
R_L = 2k
10
R_L = 600Ω
Voltage Gain vs Load Resistance
100
V_S = ±15V
T_A = –55°C
10
T_A = 25°C
T_A = 125°C
I_LMAX = 35mA AT –55°C
= 27mA AT 25°C
1
1
0
5
10
15
20
0.1
= 16mA AT 125°C
1
10
SUPPLY VOLTAGE (V)
LOAD RESISTANCE (kΩ)
1028 G25
1028 G26
8
For more information www.linear.com/LT1028
LT1028
Capacitance Load Handling
80
30pF
70
2k
60
RS _–
+
50
CL
40
30
20
10
0
10
A_V = –1, R_S = 2k
A_V = –10
R_S = 200Ω
A_V = –100
R_S = 20Ω
V_S = ±15V
T_A = 25°C
100
1000
CAPACITIVE LOAD (pF)
10000
1028 G21
LT1128
Capacitance Load Handling
80
30pF
70
2k
60
RS _–
+
50
CL
40
30
20
10
0
10
A_V = –1, R_S = 2k
A_V = –10
R_S = 200Ω
A_V = –100, R_S = 20Ω
V_S = ±15V
T_A = 25°C
V_O = 10mV_P-P
100
1000
10000
CAPACITIVE LOAD (pF)
1028 G24
Maximum Undistorted Output
vs Frequency
30
V_S = ±15V
T_A = 25°C
25
R_L = 2k
20
15
LT1128
LT1028
10
5
10k
100k
1M
10M
FREQUENCY (Hz)
1028 G27
1028fc